Respirator support structure



FIG. 1 is a perspective view, showing the new design for a respirator support structure;

FIG. 2 is a right side view thereof, the left side being a mirror image of the right side view;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is an rear view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof, showing the respirator support structure attached to a respirator mask body.

The broken line showing is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a respirator support structure, as shown and described. 